The BBC's cameras have been given unprecedented access to one of Britain's busiest airport terminals. For months, the producers have followed anyone and everyone to produce this portrait of life at the cutting edge of aviation. From check-in staff to cabin crew, from pilots to paparazzi, and from low-cost airline owners to their passengers, all human life is here - and all played by Lucas and Walliams.

In the first episode, 80-year-old Hetty Wolf takes her first-ever flight with Great British Air; husband and wife pilots Simon and Jackie sort out their marriage at 35,000 feet above Sweden; and Omar Baba, owner of low-cost carrier FlyLo, is forced to do something about the lack of life-jackets on his planes. Meanwhile, Omar's most junior employee, Taaj, is on buggy duty, and Chief Immigration Officer Ian Foot has found a suspicious passport.